a list with three named elements. 'binary' => number of binary variables, 'integer' => number of integer variables, 'continuous' => number of continuous variables.
Examples
library(magrittr)model <- MIPModel()%>% add_variable(x[i], i =1:10, type ="binary")%>% add_variable(y[i], i =1:5, type ="continuous")%>% add_variable(z[i], i =1:2, type ="integer")nvars(model)